Prove by experiment: For high pressure sodium and metal halide lamp, over-voltage 10%, life expectancy will be reduced by 50%. When voltage is 95% of rated voltage, the life expectancy increases to 2 times.
Through scientific and rational, adjust the supply voltage of street lamps not only can guarantee the normal lighting, but also can achieve energy saving and extend the life of the dual light source efficacy. In theory, making the high-pressure sodium lamp, metal halide lamps such as high-pressure gas discharge lamp by computer controls at midnight, put 88 percent down to midnight voltage rated voltage (195V), the visual brightness is only reduced by 3.4%, to extend the lamp life of 1.8 times, energy-saving rate can reach more than 25%. (the work voltage of lamp is 220V)

1. Incessant linear voltage regulation. Make use of the inductive voltage regulation, no divided Spike or Surge, no contact point or carbon brush to wear out, strong surge overload capability
2. Sturdy, durable and long service Life. No carbon brush.
3. Completely Modular design.
4. Wide AC input voltage range
5. Easy Maintenance & Service
6. We can produce the energy saver to meet buyers' local electrical power conditions.
7. Abnormal Output voltage, automatically bypass, delayed start-up function
8. Applicable to high Pressure Sodium Lamp, metal halide lamp, high Intensity Discharge lamp
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Model: HVR-3050
Rated capacity: 50KVA (40kw)
Size: 50*75*105 (CM)
Weight: 180KG
Input voltage range: 3phase4 wire 220V/240V /380V
The application of frequency: 45 ~ 65Hz
Voltage setting: Four segment voltage setting
Full load efficiency: ≥ 98%
Output voltage accuracy: Setting value ± 1%
No-load loss: ≤ 1%
Over-heating bypass: The main coil> 130C automatic bypass
Creepage distance: > 8mm
Equipment noise: Full load ≤ 65dB (distance 1M Box body)
Waveform distortion: <5%
Capacity of over-load: Double rated current 60s
Reaction time: According to the require to set
Environment humidity: 0 ~ 90% (non-condensing)
Environment temperature: -20 ~ 40 C
Full load temperature: ≤ 100C
Air-start temperature: 100 C
Cooling method: Forced air-cooled heat